Automatic paper saver



March 4, 1958 YERRlD El'AL 2,825,513

AUTOMATIC PAPER SAVER Filed Feb. 15, 1957 2 Sheet-Sheet 1 I NVEN TORS A'ITEJ R N EYS March 4, 1958 A. N. YERRID 'A AUTOMATIC PAPER SAVER 2 Sheets- Sheet 2 Filed Feb. l5 1957 INVENTORS W A! )6? w2- gi /V7940 A'ITIJ RN EYS United States AUTOMATIC PAPER SAVER Application February 15, 1957, Serial No. 640,443

3 Claims. (Cl. 24257) This invention relates to the winding and unwinding art, and more particularly. to a mechanism for controlling the unwinding of material such as paper from a roll.

The object of the invention is to provide a mechanism which will permit automatic control of the unwinding of material such as paper from a roll, as for example, when paper is being unwound or used in newspaper press rooms.

Another object of the invention is to provide a control mechanism which will permit paper or other material to be automatically unwound from a roll, the mechanism of the present invention including an idler wheel which is arranged in engagement with the outer periphery of the roll of paper which is being handled, so that as the diameter of the roll of paper decreases, the idler wheel will move to thereby move a switch, and when the switch moves to a predetermined position, the shaft which carries the roll of paper will be progressively slowed down and then stopped.

A further object of the invention is to provide an automatic control mechanism for controlling the unwinding of material such as paper from a roll, wherein the control mechanism is extremely simple and inexpensive to manufacture.

Other objects and advantages will be apparent during the course of the following description.

In the accompanying drawings, forming a part of this application, and in which like numerals are used to designate like parts throughout the same.

atent Figure l is an elevational view illustrating the control mechanism of the present invention, and with parts broken away and in section.

Figure 2 is a sectional view taken on the line 2-2 of Figure 1.

Figure 3 is a sectional view taken on the line 33 of Figure 1.

Figure 4 is a fragmentary sectional view showing the wiring diagram of the present invention.

Referring in detail to the drawings, the numeral 10 designates a roll holding shaft which includes-a reduced diameter end portion 11, Figure l, and the numeral 12 indicates a roll of paper which is mounted on a core 13, the core 13 engaging the reduced diameter portion 11 of the shaft 10. The roll of paper 12 may be of the.

type which is like.

Mounted on the shaft 10 is'a bearing housing 14, and arranged contiguous to the bearing housing 14 is a collar 15.

The present invention is directed to a means for auto matically controlling the rotation of the shaft 10 as the paper 12 is unwound from the roll whereby the unwinding of the paper can be controlled automatically and accurately. The control mechanism of the present invention includes a rod 16 which is provided with a longitudinally extending flat surface 17, and the rod 16 is further provided with a threaded shank 18 which is arranged in engagement with the collar 15.

used'in newspaper press rooms or the Adjustably mounted on the rod 16 is a sleeve 19,'and a suitable securing element such as a set screw 20 extends through the sleeve 19 and engages the surface 17 of the rod 16 so that by loosening the screw 20, the sleeve 19 can be adjusted to different positions on the rod.

Also adjustably mounted on the rod 16 is a support member 21, and the support member 21 is free to move along the rod 16 as the diameter of the paper 12 changes. Extending outwardly from the support member 21 and secured thereto is an L-shaped bar 22 which includes portions 23 and 24 which are arranged at right angles with respect to each other. A trunnion 25 connects an idler wheel 26 to the portion 24 of the bar 22, and the idler I in any suitable manner, as for example by means of screws or'bolts 29, Figure 4. The switch 28 includes a spring contact arm 30 which is mounted for movement into and out of engagement with the sleeves 19, as the support member 21 moves along the rod 16 towards and away from the sleeve 19. i

Electrically connected to the switch 28 is a timer 31-, and a unit control mechanism 32, Figure 4. The timer 31 includes a movable shaft 33 which has-a non conductive arm 34 connected thereto, and the timer further includes a non-conductive disk 35 which has a contact plate 36 thereon. There is further provided stops 37 and 38, and terminals 39, 4t) and 41.

The unit control mechanism 32 includes an on switch 42, a stop switch 43, an off switch 44, an inch switch 45, a reset switch 46, a run switch 47, and a safe switch 48. The numeral 49 indicates a line or conductor which may lead to a control panel, while the numeral 50 indicates a line which may be the direct current line.

The timer 31 further includes a sixty cycle motor 51, and there is further provided a relay 52 which includes a magnetic coil 53.

From the foregoing, it is apparent that there has been provided a means for automatically controlling the unwinding of paper from the roll 12. In use, with the parts arranged as shown in the drawings, it will beseen that the wheel 26 engages the outer periphery ofthe roll of paper 12. The support member 21 is free to move along the rod 16 so that as the paper is unwound or re moved from the roll 12, the wheel 26 will follow the paper 12 whereby the bar 22 and support member ,21 will move downwardly along the rod 16 due to the force of gravity. When the support member 21 moves down the rod 16 a suflicient distance, the spring contact 30 of the switch 28 will contact the sleeve 19 so that the mechanism for unwinding the roll 12 can be slowed down and stopped. Thus, it will be seen that there has been provided a means for automatically controlling the unwinding of. the paper 12 and this means functions in such a .manneras to shut off the unwinding mechanism as soon as the paper is removed from the roll, ,By;loosen-; 

